Description
c-ares is an asynchronous resolver library. ares_inet_net_pton() is vulnerable to a buffer underflow for certain ipv6 addresses, in particular "0::00:00:00/2" was found to cause an issue. C-ares only uses this function internally for configuration purposes which would require an administrator to configure such an address via ares_set_sortlist(). However, users may externally use ares_inet_net_pton() for other purposes and thus be vulnerable to more severe issues. This issue has been fixed in 1.19.1.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
c-ares c-ares
< 1.19.1affected
References
- https://github.com/c-ares/c-ares/security/advisories/GHSA-x6mf-cxr9-8q6v ↗
- https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1 ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/ ↗
- https://www.debian.org/security/2023/dsa-5419 ↗
- https://lists.debian.org/debian-lts-announce/2023/06/msg00034.html ↗
- https://security.gentoo.org/glsa/202310-09 ↗
- https://security.netapp.com/advisory/ntap-20240605-0005/ ↗